Infrared phonons in monoclinic Hf0.5Zr0.5O2 thin films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00642992" target="_blank" >RIV/68378271:_____/25:00642992 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0372838" target="_blank" >https://hdl.handle.net/11104/0372838</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0297535" target="_blank" >10.1063/5.0297535</a>

Result language
angličtina
Original language name
Infrared phonons in monoclinic Hf0.5Zr0.5O2 thin films
Original language description
Infrared reflectance spectra of monoclinic Hf0.5Zr0.5O2 (HZO) films with thickness in the range of 10–90 nm deposited on different cuts of Al2O3 and yttria-stabilized zirconia (YSZ) substrates were measured in the frequency region 30–4000 cm-1. Several phonons belonging to HZO were observed even for the 10 nm films. X-ray diffraction measurements were used to determine the crystal structure of the films and their orientation with respect to the substrates. The phonon spectra of HZO films grown on the anisotropic (1-102) R-cut Al2O3 substrates exhibit strong anisotropy. Comparing them with the spectra of the films on isotropic YSZ substrates, it allows us to assign the symmetry and polarization of the phonons in HZO films. We also measured the IR reflectance of HfO2, ZrO2 and HZO ceramics and compared their phonon parameters with those of the corresponding thin films.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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